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Instruction Manual

D103621X012

4320 Position Monitor

April 2014

Calibrate

To access the Calibration menu with on/off control press the right button to access the STATUS menu, then the left

button (NEXT), then the right button (SELECT). Press the right button from the STATUS menu to access the Calibration

menu when using the monitoring option.

WARNING

During calibration the valve will move full stroke. To avoid personal injury and property damage caused by the release of

pressure or process fluid, isolate the valve from the process and equalize pressure on both sides of the valve or bleed off the

process fluid.

Note

You cannot change the valve set point (i.e. open to closed) when the instrument is in snap-acting mode. This is because the

position signal from the monitored equipment is used to change the state of a different valve. Refer to figure 3 on page 3.

Manual calibration of the output is required when in snap-acting mode.

Auto Calibration (On/Off Control)

Press the left button to access AUTO calibration. This is used with On/Off Control to calibrate the pneumatic output.

Press the right button (OK) when prompted to move the valve. This will set the pneumatic output. The next display

instructs you to select the current state; push the left button to select 100% and the right button to select 0%. When

prompted press NEXT to return to the CALIBRATE menu.

Note

If it takes longer than 5 minutes to move the valve in each direction during Auto Calibration, Manual Calibration will need to be

performed. A normal auto calibration moves from Open > Closed > Open > Closed, and may take up to 20 minutes.

Manual Calibration

Press the right button to access MANUAL calibration with on/off control. Press the left button to access MANUAL

calibration with monitoring option.

Feedback— For on/off control press the left button for FEEDBACK calibration. For monitoring press SELECT.

This will allow you to select the first calibration point to be used, either 0% or 100%. Push the left button to select 100%

and the right button to select 0%. For monitoring only, the next display instructs you to set the valve or monitored

piece of equipment in either the 0 or 100% location, depending on the first calibration point chosen. Once set in

position, use the left button to toggle the recording position to MARKED. MARKED indicates that the location has been

recorded; UNMARKED indicates that position has not been recorded. After the first position has been MARKED press

NEXT to select the second calibration point (it will be be the opposite of the first calibration point). Use the left button

to toggle the recording position to MARKED. Press NEXT to enter the APPLY menu. Select YES to apply the changes.

When prompted press NEXT to return to the CALIBRATE menu.

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Emerson Fisher 4320 Bedienerhandbuch Seite 31